Common Mode Chokes / Filters:

3,655 Products Found

Our range of Common Mode Chokes includes both radial leaded and SMD types.

A common mode choke is an electrical filter that blocks high frequency noise common to two or more data or power lines while allowing the desired DC or low-frequency signal to pass. Common mode (CM) noise current is typically radiated from sources such as unwanted radio signals, unshielded electronics, inverters and motors. Left unfiltered, this noise presents interference problems in electronics and electrical circuits.

How do common mode chokes work?

In normal or differential (single choke) mode, current travels on one line in one direction from the source to the load, and in the opposite direction on the return line that completes the circuit. In common mode, the noise current travels on both lines in the same direction.

This means that the combined magnetic flux adds to create an opposing field to block the noise. In differential mode, the current travels in opposite directions and the flux subtracts or cancels out so that the field does not oppose the normal mode signal.

How to choose a Common Mode Choke?

The main criteria for selecting a common mode choke are:
  1. Required impedance: How much attenuation of noise is needed?
  2. Required frequency range: Over what frequency bandwidth is the noise?
  3. Required current handling: How much differential mode current must it handle?

Types of common mode chokes

  1. High-Speed and Super-Speed Data Line EMI Chokes
  2. Data Line Common Mode EMI Chokes
  3. Data/Power Line Common Mode EMI Chokes
  4. Surface Mount Power Line Common Mode EMI Chokes
  5. Through-Hole Power Line Common Mode EMI Chokes

Applications for common mode chokes

Common mode choke coils are suited for noise suppression on lines with large current flows, such as AC/DC power supply lines. The distortion of the waveform is reduced. Common mode choke coils are suited for noise suppression on lines where signal waveform distortion causes a problem, such as video signal lines.

Common mode choke application example

As the auto industry’s boom continues, the adoption of electronic devices in automobiles has grown rapidly. Thanks to this trend, vehicles can now be equipped with a variety of features, such as infotainment systems, ADAS (advanced driver-assistance systems), navigation systems, OBD (on-board diagnostics), and others.

CAN bus (Controlled Area Network) is one of the communication standards that allows all these features to function in unison. It uses two-wire differential signalling to send and receive data from the different devices in the network. While the nodes of the bus can be near other EMI sources in the vehicle, the design of a robust CAN bus that can withstand all incoming noise is integral to delivering a reliable and safe vehicle. In addition to other filtering techniques, common mode chokes are one of the devices that are used to combat noise in a CAN bus.

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Common Mode Chokes / Filters

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2470375

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
S$1.660
(S$1.8094)
10+
S$1.360
(S$1.4824)
50+
S$1.190
(S$1.2971)
100+
S$0.979
(S$1.0671)
200+
S$0.942
(S$1.0268)
More Pricing...
Min: 1 / Mult: 1
-
2A
DLW5BT Series
2451894

RoHS

Each
1+
S$11.090
(S$12.0881)
10+
S$9.110
(S$9.9299)
50+
S$7.880
(S$8.5892)
100+
S$7.510
(S$8.1859)
200+
S$6.930
(S$7.5537)
More Pricing...
Min: 1 / Mult: 1
1.3mH
11A
CMX1211 Series
2451891

RoHS

Each
1+
S$11.500
(S$12.535)
10+
S$9.490
(S$10.3441)
50+
S$9.090
(S$9.9081)
100+
S$8.910
(S$9.7119)
200+
S$8.730
(S$9.5157)
More Pricing...
Min: 1 / Mult: 1
320µH
28A
CMX1211 Series
2292327RL

RoHS

Each
Packaging Options
50+
S$3.460
(S$3.7714)
200+
S$3.110
(S$3.3899)
400+
S$2.640
(S$2.8776)
750+
S$2.190
(S$2.3871)
Min: 100 / Mult: 10
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20A
CM3440 Series
2458115

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$1.960
(S$2.1364)
50+
S$1.770
(S$1.9293)
250+
S$1.570
(S$1.7113)
500+
S$0.939
(S$1.0235)
1000+
S$0.921
(S$1.0039)
More Pricing...
Min: 5 / Mult: 5
510nH
500mA
1206USB Series
1636266RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$3.830
(S$4.1747)
200+
S$3.540
(S$3.8586)
500+
S$3.250
(S$3.5425)
Min: 100 / Mult: 1
100µH
300mA
WE-SLM Series
2470376

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
S$1.350
(S$1.4715)
10+
S$1.110
(S$1.2099)
50+
S$0.964
(S$1.0508)
100+
S$0.910
(S$0.9919)
200+
S$0.907
(S$0.9886)
More Pricing...
Min: 1 / Mult: 1
-
1.5A
DLW5BT Series
2292340RL

RoHS

Each
Packaging Options
1+
S$3.860
(S$4.2074)
50+
S$3.380
(S$3.6842)
100+
S$2.800
(S$3.052)
250+
S$2.510
(S$2.7359)
500+
S$2.320
(S$2.5288)
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Min: 1 / Mult: 1
-
75A
CM5441 Series
2493820

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.395
(S$0.4306)
50+
S$0.297
(S$0.3237)
250+
S$0.246
(S$0.2681)
500+
S$0.235
(S$0.2562)
1000+
S$0.224
(S$0.2442)
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Min: 5 / Mult: 5
-
400mA
SRF2012AA Series
2333672RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$2.860
(S$3.1174)
200+
S$2.540
(S$2.7686)
Min: 100 / Mult: 1
2mH
3.5A
PM3700 Series
2431579

RoHS

Each
1+
S$18.110
(S$19.7399)
3+
S$17.630
(S$19.2167)
5+
S$17.140
(S$18.6826)
10+
S$16.660
(S$18.1594)
20+
S$16.170
(S$17.6253)
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Min: 1 / Mult: 1
2mH
15A
WE-CMBNC Series
2949438

RoHS

Each
1+
S$7.780
(S$8.4802)
10+
S$5.390
(S$5.8751)
50+
S$4.690
(S$5.1121)
100+
S$3.980
(S$4.3382)
500+
S$3.680
(S$4.0112)
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Min: 1 / Mult: 1
36µH
5A
SN Series
2894670

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
S$3.320
(S$3.6188)
50+
S$2.820
(S$3.0738)
100+
S$2.560
(S$2.7904)
250+
S$2.480
(S$2.7032)
500+
S$2.390
(S$2.6051)
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Min: 1 / Mult: 1
22µH
700mA
WE-SL3 Series
2859096

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.410
(S$0.4469)
50+
S$0.300
(S$0.327)
250+
S$0.275
(S$0.2998)
500+
S$0.261
(S$0.2845)
1000+
S$0.247
(S$0.2692)
More Pricing...
Min: 5 / Mult: 5
-
400mA
SRF2012A Series
2780241

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
S$7.370
(S$8.0333)
10+
S$6.940
(S$7.5646)
25+
S$6.500
(S$7.085)
50+
S$6.060
(S$6.6054)
100+
S$5.620
(S$6.1258)
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Min: 1 / Mult: 1
4.7mH
470mA
-
2859093

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.358
(S$0.3902)
50+
S$0.294
(S$0.3205)
250+
S$0.241
(S$0.2627)
500+
S$0.231
(S$0.2518)
1000+
S$0.221
(S$0.2409)
More Pricing...
Min: 5 / Mult: 5
-
400mA
SRF2012A Series
2949486

RoHS

Each
1+
S$3.650
(S$3.9785)
10+
S$2.390
(S$2.6051)
100+
S$2.260
(S$2.4634)
250+
S$2.130
(S$2.3217)
500+
S$2.060
(S$2.2454)
More Pricing...
Min: 1 / Mult: 1
350nH
3A
SH Series
2777680

RoHS

Each
1+
S$9.830
(S$10.7147)
3+
S$9.640
(S$10.5076)
5+
S$9.440
(S$10.2896)
10+
S$9.250
(S$10.0825)
20+
S$9.050
(S$9.8645)
More Pricing...
Min: 1 / Mult: 1
230µH
16A
WE-LPCC Series
2949495

RoHS

Each
1+
S$3.260
(S$3.5534)
10+
S$2.880
(S$3.1392)
100+
S$2.260
(S$2.4634)
250+
S$2.140
(S$2.3326)
500+
S$2.050
(S$2.2345)
More Pricing...
Min: 1 / Mult: 1
3.2µH
3A
SH Series
3011709

RoHS

Each
1+
S$8.260
(S$9.0034)
10+
S$6.900
(S$7.521)
50+
S$6.330
(S$6.8997)
100+
S$6.010
(S$6.5509)
500+
S$5.600
(S$6.104)
More Pricing...
Min: 1 / Mult: 1
6.5mH
3A
SCF Series
2949444

RoHS

Each
1+
S$6.510
(S$7.0959)
10+
S$5.370
(S$5.8533)
50+
S$4.670
(S$5.0903)
100+
S$4.400
(S$4.796)
500+
S$4.060
(S$4.4254)
More Pricing...
Min: 1 / Mult: 1
250µH
5A
SN Series
2673801

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$2.170
(S$2.3653)
50+
S$1.580
(S$1.7222)
250+
S$1.360
(S$1.4824)
500+
S$1.280
(S$1.3952)
1000+
S$1.210
(S$1.3189)
More Pricing...
Min: 5 / Mult: 5
100µH
150mA
B82789C0 Series
3471205

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
S$1.450
(S$1.5805)
10+
S$1.130
(S$1.2317)
50+
S$1.070
(S$1.1663)
100+
S$1.020
(S$1.1118)
200+
S$0.959
(S$1.0453)
More Pricing...
Min: 1 / Mult: 1
-
4A
DLW5BT Series
3290641

RoHS

Each
1+
S$6.710
(S$7.3139)
10+
S$5.520
(S$6.0168)
50+
S$4.810
(S$5.2429)
100+
S$4.540
(S$4.9486)
500+
S$3.750
(S$4.0875)
More Pricing...
Min: 1 / Mult: 1
4.4mH
8A
SC-J Series
3290662

RoHS

Each
1+
S$3.440
(S$3.7496)
30+
S$2.340
(S$2.5506)
60+
S$2.250
(S$2.4525)
120+
S$2.150
(S$2.3435)
510+
S$1.910
(S$2.0819)
More Pricing...
Min: 1 / Mult: 1
350nH
10A
SC-J Series
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